ByAssociated PressOctober 11, 2010

Professor Bertil Holmlund, Staffan Normark and Professor Per Krusell announced Monday that Peter Diamond (MIT), Dale Mortensen (Northwestern University) and Christopher Pissarides (London School of Economics) had won the Nobel Prize in Economic Sciences 2010 for their theories on the relationship of economic policies to unemployment.

STOCKHOLM — Two Americans and a British-Cypriot economist won the 2010 Nobel economics prize Monday for developing a theory that helps explain why many people can remain unemployed despite a large number of job vacancies.

Diamond — a former mentor to current Federal Reserve chairman Ben Bernanke — analyzed the foundations of so-called search markets, while Mortensen and Pissarides expanded the theory and applied it to the labor market.

Their work sheds light on why the classical view of markets, in which prices are set so that buyers and sellers always find each other and all resources are fully utilized, doesn't always apply to the real world.

One example is the housing market, where buyers can struggle to find new homes even though there are a number of unsold properties available.

Another is the labor market. Because searching for jobs takes time and resources, it creates friction in the job market, helping explain why there are both job vacancies and unemployment simultaneously, the academy said.

"The laureates' models help us understand the ways in which unemployment, job vacancies and wages are affected by regulation and economic policy," the citation said.

Their work resulted in the so-called Diamond-Mortensen-Pissarides model, a frequently used tool to estimate how unemployment benefits, interest rates, the efficiency of employment agencies and other factors can affect the labor market.

"One conclusion is that more generous unemployment benefits give rise to higher unemployment and longer search times," the academy said.

President Barack Obama has nominated Diamond to become a member of the Federal Reserve. However, the Senate failed to approve his nomination before lawmakers left to campaign for the midterm congressional elections.

Senate Republicans have objected to what they see as Diamond's limited experience in dissecting the inner workings of the national economy.

Bernanke was one of Diamond's students at MIT. When Bernanke turned in his doctoral dissertation back in 1979, one of the people he thanked was Diamond for being generous with his time and reading and discussing Bernanke's work.

"The happiness is even more when it comes as a surprise," he said, speaking from his north London home.

Pissarides said that his work had already helped shape official thinking on both sides of the Atlantic.

For example, he said that the New Deal for Young People, a British government initiative aimed at getting 18-24-year-olds back on the job market after long spells of unemployment, "is very much based on our work."

Mortensen was informed that he had won the prize before a lecture, university spokesman Anders Correll said. "He was very very happy but composed at the same time," Correll said.

Diamond wrote a paper in the early 1980s that found that unemployment compensation can lead to better job matches. Workers "become more selective in the jobs they accept" because of the employment aid. And, that makes for better matches and increases efficiency, he found.

He told a Senate committee during his nomination hearing in July that a central theme of his research has been how the economy deals with risks that affect both individuals, and the entire economy.

"In all my central research areas, I have thought about and written about the risks in the economy and how markets and government can combine to make the economy function better for individuals," he said in that hearing.

The economics prize is not among the original awards established by Swedish industrialist Alfred Nobel in his 1895 will, but was created in 1968 by the Swedish central bank in his memory.

The economics jury was the last of the Nobel committees to announce 2010 winners.

Last week, British professor Robert Edwards was awarded the Nobel Prize in medicine for his fertility research that led to the first test tube baby. Russian-born scientists Andre Geim and Konstantin Novoselov won the physics prize for groundbreaking experiments with graphene, the strongest and thinnest material known to mankind.

The chemistry award went to Richard Heck and Japanese researchers Ei-ichi Negishi and Akira Suzuki for designing techniques to bind together carbon atoms.